import math

b1 = True
b2 = False
print(b1,b2)
print(type(b1))
print(type(b2))

print(math.sin(3))
print（math.hypot(6,7)
 print(True and False)
 print(True and True)
 print(True or False)
 print(not False)
#
 str1 = 'hello'
 print('h' in str1)
 print('a' in str1)
 print('c' not in str1)
 print('o' not in str1)

